The thesis is focused on alimentation and eating habits of teenagers from secondary schools in region of Hradec Králové. The theoretical part is devoted to the basic definitions which are connected with the topic – nourishment, disfunction of food consumption, alternative nutrition trends, obesity. The practical part pays attention to the particular eating habits of secondary school teenagers which were examined through questionnaire survey in the following high schools- Střední průmyslová škola, střední odborná škola a střední odborné učiliště in Nové Město nad Metují (technical school and training college), Střední škola oděvní, služeb a ekonomie in Červený Kostelec (garment, services and economic field) and Střední škola propagační tvorby a polygrafie ve Velkém Poříčí (printing and promotion). The results are elaborated in charts and graphs. In the conclusion of the thesis you can find the summary of my findings, bibliography and annexes.